Error measurement method and machine tool

US9506745B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9506745-B2
Application numberUS-201114361656-A
CountryUS
Kind codeB2
Filing dateNov 30, 2011
Priority dateNov 30, 2011
Publication dateNov 29, 2016
Grant dateNov 29, 2016

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Abstract

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A method for measuring errors in the linear feed shafts of a multi-spindle machine tool having two or more rotating feed shafts in addition to three linear feed shafts, wherein: at least first through third reflecting mirrors are attached to a table of the machine tool; a laser length-measuring machine is attached to the tip of a principal shaft of the machine tool; the linear feed shafts are driven, and the laser length-measuring machine is moved to prescribed measuring points; the two or more rotating feed shafts are driven at each of the measuring points; the coordinates at each measuring point are calculated by measuring the distances between the first through third reflecting mirrors and the laser length-measuring machine; and errors in the linear feed shafts of the machine tool are obtained by comparing the machine coordinates of the machine tool.

First claim

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The invention claimed is: 1. A method of measuring an error in relative positioning between a spindle and a table along linear feed axes of a multi feed axis machine tool having at least two rotational feed axes as well as three orthogonal linear feed axes, i.e., X-, Y- and Z-axes, for changing the relative position between the spindle and the table, the method comprising the steps of: attaching at least first to third reflector mirrors to a table of the machine tool; attaching…

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What does patent US9506745B2 cover?
A method for measuring errors in the linear feed shafts of a multi-spindle machine tool having two or more rotating feed shafts in addition to three linear feed shafts, wherein: at least first through third reflecting mirrors are attached to a table of the machine tool; a laser length-measuring machine is attached to the tip of a principal shaft of the machine tool; the linear feed shafts are d…
Who is the assignee on this patent?
Kasahara Tadashi, Makino Milling Machine
What technology area does this patent fall under?
Primary CPC classification G01B9/02016. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).